Cosmic Noise - a radio signal emitted by stars

In 2006, NASA discovered something, called "cosmic noise" - sound, six times louder than anyone expected to discover.

In space, there are no conditions for the movement of the sound, so the space is the noise - no sound, and radio waves. For the first time the phenomenon has been found ARCADE, or absolute radiometer for cosmology, astrophysics and diffuse radiation - sophisticated equipment, NASA launched into space to a height of about 36 km through the balloon. ARCADE had to look for signals from distant galaxies.

Radio signals are used to create sounds so often that it is easy to forget that they are just another form of light. They are much less active than visible light, and are not set our eyes, but in general the radio signals behave in the same way. Starry radio emission is not very different from our Sun emitted visible light.

Due to the expansion of the universe as a headlight of his journey to us from other galaxies is less intense, and eventually his range just goes into the category of radio waves. Light needs time to reach us, so when we see radio waves distant stars, we see them as they were at the time of its inception - and this applies to the whole of the visible part of the universe to us.

Actually, it is the ARCADE and had to do - to receive signals from the stars. Instead, he got the strongest radio noise. A detailed study of the phenomenon turned out that this noise is six times stronger than the scientists could predict. Older workers, however, refused to believe that it was just a very loud noise produced stars or the effect of space dust in our galaxy. It was a strong radio waves, was the result the name "cosmic noise».

via factroom.ru